<template>
	<view class="wrapper" v-show="isShowMask">
		<transition name="content">
			<view class="content_view" v-show="isShow">
				<view class="title_view">
					<view class="title">请选择所在地区</view>
					<view class="close_view" @click="hidden">
						<icon class="close_icon" :type="'clear'" size="26" />
					</view>
				</view>
				<view class="select_top">
					<view class="select_top_item" ref="select_top_item" v-for="(item,index) in dataList" :key="index" @click="select_top_item_click(index)">
						<text class="address_value">{{item}}</text>
					</view>
					<view class="indicator" :style="{ left: indicatorStyleLeft + 'px' }" ref="indicator"></view>
				</view>
				<swiper class="swiper" :current="currentIndex" @change="swiperChange">
					<swiper-item v-for="(swiper_item,swiper_index) in dataList" :key="swiper_index">
						<view class="swiper-item">
							<scroll-view class="scroll-view-item" scroll-y="true">
								<view class="address_item" v-for="(item,index) in cityAreaArray[swiper_index]" :key="index" @click="address_item_click(swiper_index,index)">
									<image v-if="selectIndexArr[swiper_index] === index" class="address_item_icon" src="../../static/yixuan-selectAddress/gou.png"
									 mode=""></image>
									{{item.name}}
								</view>
							</scroll-view>
						</view>
					</swiper-item>
				</swiper>
			</view>
		</transition>
		<view class="mask" @click="hidden" v-show="isShowMask"></view>
	</view>
</template>

<script>
	import siteInfo from "@/siteInfo.js"
	export default {
		data() {
			return {
				isShow: false,
				isShowMask: false,
				dataList: ['请选择'],
				currentIndex: 0,
				cityData: {},
				selectObjects:[0],
				cityAreaArray: [],
				selectIndexArr: [],
				indicatorStyleLeft: 16
			};
		},
		methods: {
			show() {
				this.isShow = true
				this.isShowMask = true
			},
			hidden() {
				this.isShow = false
				setTimeout(() => {
					this.isShowMask = false
				}, 500);
			},
			select_top_item_click(index) {
				console.log('select_top_item_click')
				this.currentIndex = index
				this.$nextTick(() => {
					this.changeIndicator(index)
				})

			},
			swiperChange(event) {
				let index = event.detail.current
				this.currentIndex = index

				this.changeIndicator(index)
			},
			changeIndicator(index) {

				/*
				let itemWidth = this.$refs.select_top_item[index].$children[0].$el.offsetWidth
				if (itemWidth > 80){
					itemWidth = 80
				}
				let itemCenterX = 10 + index * 80 + itemWidth / 2
				let indicatorWidth = this.$refs.indicator.$el.offsetWidth
				this.$refs.indicator.$el.style.left = itemCenterX - indicatorWidth / 2 + 'px'
				*/
				let indicatorWidth = 30
				const query = uni.createSelectorQuery().in(this);
				let arr = query.selectAll('.select_top_item .address_value')
				arr.fields({
					size: true,
					scrollOffset: false
				}, data => {

					let itemWidth = data[index]["width"] > 80 ? 70 : data[index]["width"]
					let itemCenterX = 10 + index * 80 + itemWidth / 2
					let left = itemCenterX - indicatorWidth / 2

					console.log('changeIndicator', itemWidth, index)

					this.indicatorStyleLeft = left

				}).exec();


			},
			address_item_click(swiper_index, index) {
				console.log(swiper_index, index)
				this.selectIndexArr.splice(swiper_index, 5, index)

				//判断当前是否为最下一级
				if (swiper_index === 0) { //第一级

					let currentObj = this.cityData[index]
					// this.selectObjects.splice(swiper_index, 1,currentObj.id)
					console.log(currentObj)
					let city = currentObj.name
					console.log(city)
					this.dataList.splice(swiper_index, 5, city)
					this.dataList.splice(swiper_index + 1, 0, '请选择')
					if (currentObj["childs"].length > 1) {
						this.cityAreaArray.splice(swiper_index + 1, 1, currentObj["childs"])
					} else {
						this.cityAreaArray.splice(swiper_index + 1, 1, currentObj["childs"][0]['childs'])
					}
					console.log(this.dataList)
					setTimeout(() => {
						this.currentIndex = 1
						this.changeIndicator(1)
					}, 50);
				} else {
					let currentAreaArray = this.cityAreaArray[swiper_index]
					let currentObj = currentAreaArray[index]
					
					let area = currentObj["childs"]
					// console.log(currentAreaArray)
					if (area !== undefined) {
						let city = currentObj.name
						// this.selectObjects.splice(swiper_index, 1,currentObj.id)
						this.dataList.splice(swiper_index, 5, city)
						this.dataList.splice(swiper_index + 1, 0, '请选择')
						this.cityAreaArray.splice(swiper_index + 1, 1, currentObj["childs"])

						setTimeout(() => {
							this.currentIndex = swiper_index + 1
							this.changeIndicator(swiper_index + 1)
						}, 50);

					} else { //是最下一级
						let lastcity = currentObj.name
						console.log(lastcity)
						this.selectObjects.splice(0,1,currentObj.id)
						this.dataList.splice(swiper_index, 1, lastcity)
						console.log(this.dataList,'11')
						//选择成功返回数据
						let data={obj:this.selectObjects,text:this.dataList.join('')}

						this.$emit("selectAddress",data )

						this.$nextTick(() => {
							this.changeIndicator(swiper_index)
						})

						setTimeout(() => {
							this.isShow = false
						}, 100);
						setTimeout(() => {
							this.isShowMask = false
						}, 500);

					}

				}

			},
			async loadcities() {
			  let area = await import('../../static/json/area.json')
        console.log(area);
        this.cityData=area
        this.cityAreaArray.push(area)

        console.log(this.cityData);
        // console.log(area);
        // let that=this
				// uni.request({
				// 	url: siteInfo.apiroot + '/static/json/area.json',
				// 	method: 'GET',
				// 	success(res) {
				// 		that.cityData=res.data
				// 		that.cityAreaArray.push(res.data)
				// 	},
				// 	fail(err) {
				// 		console.log(err)
				// 	}
				// })
			}
		},
		created() {
			// this.cityData = cityData
			// this.cityAreaArray.push(cityData)
		},
		mounted() {
			this.loadcities()
			// this.changeIndicator(0)
		}
	}
</script>

<style lang="scss">
	// 不换行
	@mixin no-wrap() {
		text-overflow: ellipsis;
		overflow: hidden;
		white-space: nowrap;
	}

	.wrapper {
		z-index: 1999;
		position: absolute;
		top: -44px;
		left: 0;
		bottom: 0;
		right: 0;

		.content_view {
			z-index: 999;
			background: white;
			position: absolute;
			height: 80%;
			left: 0;
			bottom: 0;
			right: 0;
			border-top-left-radius: 20px;
			border-top-right-radius: 20px;

			.title_view {
				height: 12%;
				display: flex;
				justify-content: space-between;
				align-items: center;
				padding: 0 $uni-spacing-row-sm;

				.title {
					font-size: uni-font-size-sm;
				}

				.close_view {
					height: 60px;
					width: 60px;
					display: flex;
					justify-content: center;
					align-items: center;
				}
			}

			.select_top {
				height: 8%;
				display: flex;
				justify-content: start;
				align-items: center;
				padding: 10px;
				position: relative;
				box-sizing: border-box;

				.select_top_item {
					width: 80px;
					font-size: 14px;
					@include no-wrap();
				}

				.indicator {
					position: absolute;
					width: 30px;
					height: 2px;
					background: $uni-color-error;
					left: 16px;
					bottom: 0;
					transition: left 0.5s ease;
				}
			}

			.swiper {
				height: 80%;
				position: relative;
				left: 0;
				top: 0;
				bottom: 0;
				right: 0;

				.swiper-item {
					height: 100%;

					.scroll-view-item {
						height: 100%;
						padding: 0 10px;

						.address_item {
							padding: 5px 0;
							font-size: 14px;
							display: flex;
							align-items: center;

							.address_item_icon {
								width: 20px;
								height: 20px;
								margin-right: 10px;
							}
						}
					}
				}
			}
		}

		.mask {
			position: absolute;
			top: 0;
			left: 0;
			bottom: 0;
			right: 0;
			background: $uni-text-color-grey;
			opacity: 0.7;
		}
	}

	.content-enter {
		transform: translateY(100%);
	}

	.content-enter-to {
		transform: translateY(0%);
	}

	.content-enter-active {
		transition: transform 0.5s;
	}

	.content-leave {
		transform: translateY(0%);
	}

	.content-leave-to {
		transform: translateY(100%);
	}

	.content-leave-active {
		transition: transform 0.5s;
	}
</style>
